with no skin they vary from 588 KB to, like 780 KB depending if they have bones or not.
for the female model, i have a few versions.....
the basic female with or without bones, one has no hair so the developer can make their own, I also have the 'exploded' model to make a skin map from the front view, things like that.
I never just send one model
people get a few things with a purchase